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drivers/net/r8168: Add customized LED mode 

This patch adds a function to program a customized LED setting
for Realtek 81xx family. It reads the settings from devicetree under
target board and programs the setting to offset 0x18 and 0x19.

BUG=b:65437780

TEST=Add customized_leds register in devicetree.cb under target board,
	enable RT8168_SET_LED_MODE flag. Make sure the setting is
	programmed correctly to offset 0x18 and 0x19. Observed the
	LEDs were behaving as expected. Executed suspend/resume and
	the LEDs were still working as expected.

Change-Id: Ib3d4f2cd98ac391e1661a891d604bdd1974d07f6
Signed-off-by: Gaggery Tsai <gaggery.tsai@intel.com>
Reviewed-on: https://review.coreboot.org/21862
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Gaggery Tsai 2017-09-29 11:15:23 +08:00 committed by Furquan Shaikh
parent a26c94e854
commit 65623efda5
3 changed files with 75 additions and 4 deletions
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11
src/drivers/net/Kconfig
View File

@ -18,3 +18,14 @@ config RT8168_GET_MAC_FROM_VPD
bool
default n
select REALTEK_8168_RESET
config RT8168_SET_LED_MODE
bool
default n
select REALTEK_8168_RESET
help
This is to set a customized LED mode to distinguish 10/100/1000
link and speed status with limited LEDs avaiable on a board.
Please refer to RTL811x datasheet section 7.2 Customizable LED
Configuration for details. With this flag enabled, the
customized_leds variable will be read from devicetree setting.

21
src/drivers/net/chip.h Normal file
View File

@ -0,0 +1,21 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __DRIVERS_R8168_CHIP_H__
#define __DRIVERS_R8168_CHIP_H__
struct drivers_net_config {
uint16_t customized_leds;
};
#endif /* __DRIVERS_R8168_CHIP_H__ */

45
src/drivers/net/r8168.c
View File

@ -31,11 +31,13 @@
#include <device/pci_def.h>
#include <delay.h>
#include <fmap.h>
#include "chip.h"
#define NIC_TIMEOUT 1000
#define CMD_REG 0x37
#define CMD_REG_RESET 0x10
#define CMD_LED0_LED1 0x18
#define CFG_9346 0x50
#define CFG_9346_LOCK 0x00
@ -211,22 +213,59 @@ static void program_mac_address(struct device *dev, u16 io_base)
printk(BIOS_DEBUG, "done\n");
}
static void r8168_set_customized_led(struct device *dev, u16 io_base)
{
struct drivers_net_config *config = dev->chip_info;
if (!config)
return;
/* Read the customized LED setting from devicetree */
printk(BIOS_DEBUG, "r8168: Customized LED 0x%x\n", config->customized_leds);
/*
* Refer to RTL8111H datasheet 7.2 Customizable LED Configuration
* Starting from offset 0x18
* Bit[15:12] LED Feature Control(FC)
* Bit[11:08] LED Select for PINLED2
* Bit[07:04] LED Select for PINLED1
* Bit[03:00] LED Select for PINLED0
*
* Speed Link10M Link100M Link1000M ACT/Full
* LED0 Bit0 Bit1 Bit2 Bit3
* LED1 Bit4 Bit5 Bit6 Bit7
* LED2 Bit8 Bit9 Bit10 Bit11
* FC Bit12 Bit13 Bit14 Bit15
*/
/* Set customized LED registers */
outw(config->customized_leds, io_base + CMD_LED0_LED1);
printk(BIOS_DEBUG, "r8168: read back LED setting as 0x%x\n",
inw(io_base + CMD_LED0_LED1));
}
static void r8168_init(struct device *dev)
{
/* Get the resource of the NIC mmio */
struct resource *nic_res = find_resource(dev, PCI_BASE_ADDRESS_0);
u16 io_base = (u16)nic_res->base;
/* Check if the base is invalid */
if (!io_base) {
printk(BIOS_ERR, "r8168: Error cant find IO resource\n");
return;
}
/* Enable but do not set bus master */
pci_write_config16(dev, PCI_COMMAND,
PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
/* Program MAC address based on CBFS "macaddress" containing
* a string AA:BB:CC:DD:EE:FF */
if (io_base)
program_mac_address(dev, io_base);
else
printk(BIOS_ERR, "r8168: Error cant find MMIO resource\n");
/* Program customized LED mode */
if (IS_ENABLED(CONFIG_RT8168_SET_LED_MODE))
r8168_set_customized_led(dev, io_base);
}
static struct device_operations r8168_ops = {